Air showers ensuing from very-high-energy cosmic rays can enter Earth’s atmosphere from multiple directions. Credit: Simon Swordy/NASA
Previously, studies have found that airplane crews at high altitude are exposed to potentially harmful levels of radiation from cosmic rays. But could these cosmic rays pose hazards even at sea level?
A new NASA-funded investigation has found radiation from solar events is too weak to cause worry at ground level. Results have just been published in the Journal of Geophysical Research and hailed as one of three “Editor’s Choice” publications for the first quarter of 2015 by Space Weather ...Today / Posted by: Aaron Gronstal
This artist's concept compares Earth (left) to the new planet, called Kepler-452b, which is about 60 percent larger in diameter. Credits: NASA/JPL-Caltech/T. Pyle
NASA’s Kepler mission has confirmed the first near-Earth-size planet in the “habitable zone” around a sun-like star. This discovery and the introduction of 11 other new small habitable zone candidate planets mark another milestone in the journey to finding another “Earth.”
The newly discovered Kepler-452b is the smallest planet to date discovered orbiting in the habitable zone — the area around a star where liquid water could pool on the surface of an orbiting ...July 23, 2015 / Posted by: Aaron Gronstal
Rocks at Soudan Underground Mine State Park, Minnesota, show banding caused by layers of different minerals in a sample 2.7 billion years old. Credit: University of Wisconsin-Madison, http://news.wisc.edu/23863
A new study identifies sources of iron found in Banded Iron Formations (or BIFs) that were formed 2.5 billion years ago. The BIFs are sedimentary deposits formed at the bottom of Precambrian oceans on Earth, and contain distinctive layers of material. BIFs are reddish in color due to the iron they contain, and these deposits are a major source of iron used by humankind today.
Previously ...July 23, 2015 / Written by: Aaron Gronstal
Cassini imaging scientists used views like this one to help them identify the source locations for individual jets spurting ice particles, water vapor and trace organic compounds from the surface of Saturn’s moon Enceladus. Credit: NASA/JPL
The discovery of plumes at worlds like Enceladus raises an intriguing question about how best to explore these small, icy bodies. In a recent presentation called “Europa and beyond: Adaptive robotic exploration of planetary plumes,” Nathalie Cabrol of the SETI Institute described a 'Swiss army knife’ approach in developing instruments and exploration strategies for icy moons in the Solar ...
As New Horizons closes in on Pluto and Charon, it may be able to detect signs that one or both objects boast icy plumes, either now or in their past. Credits: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute
A new study of objects in the outer reaches of the solar system suggests that bodies like Pluto and Charon have the potential to support eruptions of icy material. The research indicates that if cryo-volcanism has occurred on Pluto, Charon’s surface could retain evidence of such events.
The research was published online in the journal ...
Audiences pack the Grand Hall for the AbSciCon 2015 Regional Heat of the FameLab USA competition. Credit: NASA Astrobiology
Astrobiologists gathered in Chicago, Illinois, from June 15-19th for the 2015 Astrobiology Science Conference (AbSciCon). Researchers from a multitude of disciplines, and representing institutions from around the world, used the conference as a forum to report new discoveries, share data, initiate and advance collaborative efforts, plan new projects, and educate the next generation of astrobiologists.
“AbSciCon reflects the importance of astrobiology in supporting NASA’s current and ongoing missions,” said Mary Voytek, Program Scientist for Astrobiology at NASA.
Peter Doran, the ...July 17, 2015 / Written by: Aaron Gronstal
Sunset on Saturn’s moon Titan reveals the atmosphere around the moon as seen from the night side with NASA’s Cassini spacecraft. Credit: NASA/JPL-Caltech/SSI
Titan is a mysterious orange-socked moon of Saturn that is exciting to astrobiologists because it has some of the same kinds of chemicals that were precursors to life on Earth. Its atmosphere is 95 percent nitrogen, but it also has a tad bit of methane, predominantly close to the surface.
Titan’s methane is thought to be less than a half billion years old, leading astrobiologists to wonder what Titan ...
AbGradCon 2015 webcast (July 20-22) available at http://abgradcon.org/remote.html and http://saganet.org/page/saganlive
The NAI-sponsored Astrobiology Graduate Conference (AbGradCon) 2015 will be held on July 19-23, 2015 at the University of Wisconsin-Madison.
Those unable to attend in person can still participate via live webcast. The stream will start at 8AM CDT on July 20, 21, and 22 at http://abgradcon.org/remote.html. You can also view the webcast and join in a live chat on the SAGANet site: http://saganet.org/page/saganlive.
AbGradCon offers a unique opportunity for graduate students and early career ...July 15, 2015 / Posted by: Miki Huynh
The "Dynamic Duo" photo of Pluto and Charon taken by the New Horizons spacecraft on July 8, 2015 from 3.7 million miles away. Credit: NASA-JHUAPL-SWRI
Excitement builds as the public waits for the New Horizons spacecraft to fly by Pluto on July 14, 2015. The flyby will create a landmark in our understanding of Pluto’s atmosphere, geology, and other surface conditions and increase our understanding of what lies further on in the Kuiper Belt.
Because extremely cold temperatures make present-day volcanic activity and circulation of biogenic elements on the icy surface impossible, neither Pluto nor its moons are ...July 13, 2015 / Written by: Miki Huynh
Andrew Mattioda, Space and Planetary Scientist at NASA Ames, and Carl Rutledge, Professor at East Central University, guide CNASA students in viewing solar prominences. Credit: NASA Space Science
On June 9th and 10th, Dr. Andrew Mattioda of the NASA Astrobiology Institute (NAI) CAN 7 team participated in the Chickasaw Nation Aeronautics and Space Academy (CNASA) held in Ada, Oklahoma. The Chickasaw Nation conducts the week-long camp to encourage their Native American youth to consider careers in the STEM (Science, Technology, Engineering and Mathematics) fields. During his two days at the camp, Dr ...July 10, 2015 / Posted by: Miki Huynh
A graphic showing scientific disciplines covered in astrobiology research at the NAI between 2008 and 2012. Credit: Taşkın and Aydinoglu (2015)
Dr. Arsev Aydinoglu performed a thorough examination of academic publications resulting from research funded by the NASA Astrobiology Institute (NAI). The bibliometric study analyzed 1210 peer-reviewed papers that were published between 2008 and 2012, and provides important insights into the collaborative and interdisciplinary nature of astrobiology research at the NAI. The work reveals information about the types of journals and fields of study that feature in publications, and the ways in which astrobiologists work together to advance the science ...July 9, 2015 / Written by: Aaron Gronstal
The Stone Aerospace team with VALKYRIE (the black tube hanging on the apparatus in the middle of the picture) on the Matanuska glacier during testing in 2014. Image: Stone Aerospace
A robotic “cryobot,” designed to tunnel down through thick ice caps and penetrate subterranean seas, is undergoing tests on the Matanuska glacier in Alaska. It paves the way towards one day exploring the underground oceans of Jupiter’s moon, Europa, or other icy moons of the Outer Solar System.
Named VALKYRIE (Very deep Autonomous Laser-powered Kilowatt-class Yo-yoing Robotic Ice Explorer) and funded by NASA’s Astrobiology Science ...
Microbes survived on the exterior of the International Space Station for nearly two years, if their UV radiation was limited or eliminated. Credit: NASA
Outer space might be the toughest environment for life, but some hearty microbes have been able to survive in it for surprising amounts of time. Understanding how well microbes can survive in space is of importance when sending out orbiters or landers around bodies that might present the right conditions for life, such as Mars. Scientists want to be careful to avoid contaminating other worlds with life from our own.
In a recent ...
The red color of Aguas Calientes comes from algae, which must create their protection from the harsh ultraviolet radiation coming from the son. Credit: The High Lakes Project: The SETI Institute Carl Sagan Center/NASA Ames/ NAI
Could Mars, of all places, be the place to look for early life on Earth? It’s an intriguing thought and one that astrobiologists take seriously as they consider the conditions during the early days of Solar System when both planets experienced frequent bombardments by asteroids and comets that resulted in debris exchange between one body and the other.
The fifth regional heat of FameLab USA’s Season 3 took place at the 2015 Astrobiology Science Conference in Chicago. Credit: NASA Astrobiology
The fifth regional heat of FameLab USA’s Season 3 took place in Chicago, IL, on June 13-15 in conjunction with the 2015 Astrobiology Science Conference (AbSciCon).
Fifteen early career scientists participated, and the research represented covered everything from the geological history of Earth to planetary atmospheres and the search for life on planets beyond our solar system! The first round of competition was held in The Field Museum of Chicago.
Ten of the fifteen participants advanced ...June 25, 2015 / Written by: Aaron Gronstal
- July 29 - USGS Training Workshop: Introduction to GIS for Planetary Mappers
- August 1 - Postdoctoral Teaching Associate in Mineralogy - University of Tennesee
- August 1 - Application Deadline for Ten Postdoctoral Fellowships in Interdisciplinary Research Relating to Origins of Life
- August 1 - Application Deadline for Reconceptualizing the Origin of Life: Experimental, Interdisciplinary, and Computational Windows on the Core Concepts - Conference
- August 5 - Direct Imaging of Habitable Exoplanets (Session P003) Abstract Submission Deadline for American Geophysical Union (AGU) Fall Meeting
- August 5 - Abstract Submission Deadline for American Geophysical Union (AGU) Fall Meeting
- August 11 - Abstract Submission Deadline for Geological Society of America (GSA) 2015 Annual Meeting
- August 21 - Summer School at Moletai Observatory: "Formation and Evolution of Planetary Systems and Habitable Planets"
- August 24 - Berkner Autumn Program 2015